My new student, who I'm tutoring, is a rich girl who lives in a mansion! I thought she was a quiet and serious girl, but she turned out to be a super lewd girl who wanted excitement in her boring life! "I'll study if you have sex with me!" is the forbidden exchange condition!? I get aroused by her overly erotic temptation and can't refuse her penetration! From that day on, the lesson content escalates in a sexy direction! It feels so good that I can't stop thrusting, and it's exactly what the girl wants!